EP0817483B1 - Appareil de télévision avec des fonctions de traitement de données de texte - Google Patents

Appareil de télévision avec des fonctions de traitement de données de texte Download PDF

Info

Publication number
EP0817483B1
EP0817483B1 EP97111327A EP97111327A EP0817483B1 EP 0817483 B1 EP0817483 B1 EP 0817483B1 EP 97111327 A EP97111327 A EP 97111327A EP 97111327 A EP97111327 A EP 97111327A EP 0817483 B1 EP0817483 B1 EP 0817483B1
Authority
EP
European Patent Office
Prior art keywords
tuner
text data
signal
screen
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97111327A
Other languages
German (de)
English (en)
Other versions
EP0817483A2 (fr
EP0817483A3 (fr
Inventor
Tadao Takashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of EP0817483A2 publication Critical patent/EP0817483A2/fr
Publication of EP0817483A3 publication Critical patent/EP0817483A3/fr
Application granted granted Critical
Publication of EP0817483B1 publication Critical patent/EP0817483B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information

Definitions

  • This invention relates to a television device which has a text data processing function and a multiscreen display function and which can receive and display text data in addition to a television signal.
  • the television device of the multiscreen system can display a first image which is compressed in the horizontal direction as a parent screen on one side of the wide screen and display another compressed image as a child screen on a space area on the other side of the wide screen.
  • the display mode is known as PIP (Picture In Picture).
  • the wide screen can be divided into right and left areas of the same size and images of different broadcasting programs can be simultaneously displayed on the right and left shared screens.
  • the television device of double-screen system has two different tuners.
  • a data broadcasting program for transmitting text data multiplexed on the television signal.
  • the text data is multiplexed in the vertical blanking period of the television signal.
  • a normal television broadcasting program and a data broadcasting program are received, an image of the normal television broadcasting program is displayed on one of the shared screens, and an image of the text data of the data broadcasting program is displayed on the other shared screen.
  • the double-screen system can be utilized in various configurations of display types. That is, there are provided a one-screen display mode in which a normal television broadcasting program is received by use of only the first tuner and the image is displayed on the entire area of the wide screen, a double-screen display mode in which normal television broadcasting programs are received by use of the first and second tuners and respective images are displayed on the left and right screens, and a double-screen display mode in which text data is displayed on one of the screens.
  • EP 0 660 602 A which was published on June 28, 1996 and therefore forms part of the state of the art under Art. 54(3) EPC, discloses a television device as described above.
  • This television device has a text data processing function and is adapted to perform a switching operation from a double-screen display mode, in which video signals of first and second tuners and text data of the second tuner are displayed on a screen, to a one-screen display mode, in which the video signal and text data of one of the tuners are displayed on the screen.
  • the television device further comprises reception means having at least the first and second tuners and capable of receiving and demodulating television broadcasting signals of two channels, video signal processing means for independently displaying a video signal which is a reception signal of the first tuner in the one-screen display mode or compressing at least one of video signals which are reception signals of the first and second tuners to simultaneously display both video signals on a display device in the double-screen display mode, selector means for selectively deriving one of the television broadcasting signals received by the first and second tuners, text receiving/demodulating means for receiving an output of the selector means and receiving and demodulating transmitted text data superposed on a data channel contained in the selectively derived television broadcasting signal and independent from the video/audio signal thereof, text synthesizing means for synthesizing the text data demodulated by the text receiving/demodulating means with an output of the video signal processing means, synchronization separation means for separating a synchronizing signal from the output of the selector means, and means for setting said second tuner to another channel or setting said second tun
  • JP-A-02-198284 proposes to solve the problem of the waiting time when parentage is inverted by removing the fly-back period of a vertical synchronous signal from teletext signal fetching timing.
  • a character decoder decodes teletext from a tuner and inputs the decoded teletext through a subordinate screen circuit to an RGB switching circuit, on a CRT, while a television broadcasting screen by a first tuner is displayed as a master screen, a teletext screen by the second tuner is displayed as a slave screen.
  • the text decoder can stably acquire continuous text data.
  • FIG. 1 shows the positional relation of data items having text signals inserted into a television signal of normal NTSC system. That is, text signals D1 to D4 are transmitted in the respective vertical blanking periods.
  • the text signal is inserted into the tenth horizontal period (10H) to the thirteenth horizontal period (13H) of the vertical blanking period in the same manner as in the multiplexed text system.
  • the multiplexed text signal is repeatedly broadcasted, but the text signal is broadcasted as real-time information synchronized with the corresponding main program.
  • the text signal may be broadcasted repeatedly in the same manner as the multiplexed text signal.
  • FIG. 2 shows a television device having a function of processing the above text data.
  • the television device has two systems each including a receiving system such as a tuner for receiving ground waves in order to make full use of the double-screen function.
  • a television signal S1 output from a first tuner 11 is supplied to a video processing circuit 12.
  • a video signal S2 which is an output signal of the video processing circuit 12 is supplied to a compression circuit 13 and selection circuit 14.
  • a memory (not shown) is connected to the compression circuit 13 so that a compressed still picture can be stored and pictures of the respective channels can be sequentially stored and read out in the channel search mode.
  • a video signal output from the compression circuit 13 is supplied to the selection circuit 14.
  • a video signal S3 selected by the selection circuit 14 is converted into an analog signal in a synthesizer circuit 15 and then supplied to a color cathode ray tube 16 for image display.
  • a television signal S4 output from a second tuner 17 is supplied to a video processing circuit 18.
  • a video signal S5 which is an output signal of the video processing circuit 18 is supplied to a compression circuit 19 and selection circuit 14.
  • a video signal S3 selected by the selection circuit 14 is supplied to the color cathode ray tube 16 via the synthesizing circuit 15 and a corresponding image is displayed.
  • the output video signal S2 of the video processing circuit 12 is supplied to one of two terminals of a selector 24.
  • the output video signal S5 of the video processing circuit 18 is supplied to the other terminal of the selector 24.
  • a signal selected by the selector 24 is input to a text data decoder 20. If the text data decoder 20 is switched into a text processing mode via a microcomputer 22 by the operation of a remote controller 21, a text data processing operation is effected. An output signal obtained by the text processing operation is supplied to the synthesizing circuit 15 via an output circuit 23 in which the output timing is controlled. As a result, the text image is superposed on the image output from the selection circuit 14 and displayed.
  • the above television device is normally constructed such that the video processing circuit 12 has a higher performance and provides an image of higher image quality in comparison with the video processing circuit 18.
  • an output signal of the selector 24 is supplied to a sync separation circuit 31.
  • a synchronizing signal separated in the sync separation circuit 31 is supplied to the microcomputer 22.
  • the selector 24 is controlled by a switching control signal S6 from the microcomputer 22.
  • the microcomputer 22 is designed to control the switching position of the selector 24 in a period other than the period of the synchronizing signal supplied from the sync separation circuit 31 when controlling the selector 24.
  • the channel of the system including the video processing circuit 12 is selected to perform the normal image display.
  • the one-screen display mode is specified and the output video signal S2 from the video processing circuit 12 is selected by the selection circuit 14, supplied to the color cathode ray tube 16 via the synthesizing circuit 15 and displayed on the color cathode ray tube.
  • the video signal S2 of the video processing circuit 12 is compressed to 1/2 in the horizontal direction by the compression circuit 13 and the video signal S5 of the video processing circuit 18 is compressed by half in the horizontal direction by the compression circuit 19.
  • the selection circuit 14 alternately selects the outputs of the compression circuits 13 and 19 for every 1/2 horizontal period and supplies the selected output to the synthesizing circuit 15.
  • a video image of a channel selected by the first tuner 11 is displayed on the left side of the display screen and a video image of a channel selected by the second tuner 17 is displayed on the right side of the display screen.
  • the output video signals of the video processing circuits 12 and 18 are supplied to and synchronized by a synchronization processing circuit (not shown) and then output.
  • the television signal S1 received by the first tuner 11 is displayed as a parent picture on a left screen 411 of a wide screen 41 as shown in FIG. 3A.
  • the television signal S4 received by the second tuner 17 is displayed as a child picture on a right screen 412 of the wide screen 41 as shown in FIG. 3A.
  • the parent picture is displayed on the entire area of the wide screen 41 as shown in FIG. 3B.
  • a double-screen display state in which a video image of a first channel by the first tuner is displayed on the left screen and text data and a video image of a fourth channel by the second tuner 17 are displayed on the right screen (the text data decoder 20 selects the second tuner 17 side) is set as shown in FIG. 4A. Further, assume that the display state is switched from the present state to a state in which the video image of the fourth channel and text data are displayed on the entire area of the wide screen.
  • the operation state of the first tuner 11 is switched from a state in which the first channel is received to a state in which the fourth channel is received and an unstable state occurs until the channel selection is completed (refer to FIG. 4B).
  • the unstable state occurs because it takes a long time to correctly perform the AGC (Automatic Gain Control) and the conversion of PLL (Phase Locked Loop) data of the selection circuit at the time of channel switching. Therefore, in a preset period of time after the screen switching operation has been effected, the reception signal in the system of the first tuner becomes unstable and text data cannot be correctly reproduced (refer to FIG. 4C).
  • AGC Automatic Gain Control
  • PLL Phase Locked Loop
  • teleshopping In the field of application of the text data broadcasting, teleshopping is provided. That is, goods or articles are introduced in a television program, and information such as the article codes of the respective articles and the dealing shops thereof is transmitted as text data. If the channel switching operation described above is effected in such a television program, a telephone number for doing the teleshopping is sometimes lost.
  • the screen switching operation is effected as follows so as to prevent occurrence of omission of data.
  • FIGS. 5A to 5E show the states of outputs and data obtained when the switching position of the selector 24 is controlled in a case where text data is input to the parent screen or child screen. That is, when the display mode is switched from the double-screen display mode to the one-screen display mode by operating the remote controller 21, first, the reception channel of the first tuner 11 is switched to a channel which is the same as the reception channel of the second tuner 17 by a selection control signal from the microcomputer 22. At this time, the selection circuit 14 selects the output signal of the video processing circuit 18 and an image of the television signal S4 (FIG. 5A) output from the second tuner 17 is displayed on the display screen 41. The selector 24 keeps the state in which the video processing circuit 18 is selected.
  • the second tuner 17 continues to receive the program until the first tuner 11 is set to select a channel for a desired program and the image mute thereof is released.
  • the reception channel is switched to the same channel as the reception channel of the second tuner 17. Therefore, the television signal S1 is changed to the channel of the television signal S4 received by the second tuner 17 after a channel selection stable time t1 has passed as shown in FIG. 5B. At the same time, it is subjected to the IF AGC control.
  • FIG. 5C shows a synchronizing signal output from the sync separation circuit 31 and FIG. 5D shows an output of the selector 24.
  • the selector 24 may effect the switching operation when the synchronizing signal output from the sync separation circuit 31 is at the low level, that is, in a period other than the vertical blanking period.
  • the synchronizing signal output from the sync separation circuit 31 shown in FIG. 5C is input to the microcomputer 22.
  • the microcomputer 22 sets the channel selection stable time t1 from the operation time of the screen switching key and then changes the switching position of the selector 24 from the second tuner 17 side to the first tuner 11 side in a period of time t2 other than the vertical blanking period. That is, it controls the selector 24 to select the output of the video processing circuit 12.
  • the text data decoder 20 can receive text data items D3, D4, D5 shown in FIG. 5E derived from the first tuner 11 side. As a result, text data items D1 to D5 are not lost and can be decoded in the text data decoder 20.
  • the second tuner 17 After input of the text data is switched to the first tuner 11, the second tuner 17 is set to receive another channel or set into the OFF state. Even if the time t2 is set as predetermined fixed time, the object of this invention can be attained. Further, it is possible to provide means for positively monitoring and determining whether or not the reception state of the tuner 11 becomes stable in order to determine the switching timing of the selector 24 and use an output of the monitoring means so as to switch the switching position of the selector 24.
  • Switching of the display images on the wide screen is effected by use of the selection circuit 14.
  • the switching can be effected in the horizontal synchronizing signal period of the compressed video signal.
  • the display mode is switched from the double-screen display mode to the one-screen display mode and the test data reception state of the second tuner side is switched to the text data reception state of the first tuner.
  • the concept of this invention is not limited to the above mode switching operation.
  • this invention can be applied in a case wherein the switching operation is effected between the reception channel of the first tuner and the reception channel of the second tuner while the state of the double-screen display mode is maintained. More specifically, the reception channels of one of the tuners which now receives text data and the other tuner which is to receive the text data are controlled to overlap in a preset period of time so as to prevent the text data from being lost.
  • an output of the other (latter) tuner which now receives the text data is supplied to the text data decoder and then the reception state of the former tuner is controlled.
  • the text data decoder selects the output of the former tuner.
  • FIG. 6 shows another embodiment of this invention.
  • an output video signal S2 of the video processing circuit 12 and an output video signal S5 of the video processing circuit 18 are supplied to a switching section 51, one of the two output signals of the switching section 51 is supplied to a V/C/D processing circuit 52, and the other output signal thereof is supplied to the compression circuit 19 and selection circuit 14.
  • the V/C/D processing circuit 52 is a video/chroma/deflection processing circuit, and can adjust the image quality by controlling the luminance signal and can adjust the hue and color balance by controlling the chroma signal. Further, it processes the synchronizing signal for deflection process.
  • the V/C/D processing circuit 52 processes the output video signal selected and derived by a switch 511 of the switching section 51 and supplies the processed output video signal to the selection circuit 14 and compression circuit 13. Further, the V/C/D processing circuit 52 separates the synchronizing signal from the output video signal selected and derived by the switch 511 of the switching section 51 and supplies the synchronizing signal to the microcomputer 22.
  • the switch 511 normally selects a signal on the first tuner 11 side and a switch 512 selects a signal on the second tuner 17 side.
  • the switching section 51 is used to replace the right and left images in the double-screen display mode. That is, if the switch 511 is set to select the output on the tuner 17 side and the switch 512 is set to select the output on the tuner 11 side, the images of the right and left positions can be replaced with each other.
  • the display state is switched from the double-screen display state to the one-screen display state as shown in FIG. 4A like the case of the former embodiment.
  • the switch 511 is switched to the second tuner 17 side based on a switching control signal from the microcomputer 22. Therefore, the V/C/D processing circuit 52 processes the output video signal of the same program as that of the output video signal selected and derived by the switch 512.
  • the selection circuit 14 selects the output signal of the V/C/D processing circuit 52 and outputs the same as a signal for the wide display screen. Further, the reception state of the first tuner 11 is set to the reception state of a channel which is the same as the reception channel of the second tuner 17 in which the text broadcasting is performed.
  • the reception state of the first tuner 11 becomes stable when a preset period of time has passed. Then, the microcomputer 22 controls the switch 511 to select the video signal on the first tuner 11 side. Further, when the switching position of the selector 24 is switched, the microcomputer 22 monitors the synchronizing signal from the V/C/D processing circuit 52 and controls the selector 24 to select the signal on the first tuner 11 side in a period other than the period of the vertical synchronizing signal.
  • text data can be continuously received even when the switching operation of reception between a plurality of tuners is effected and the text data process of high reliability can be attained.
  • FIG. 7 shows an example of the concrete construction of the text data decoder.
  • a video signal is input to a sync separation section 122 and A/D converter 123 via an input terminal 121.
  • Digital data explained with reference to FIG. 1 is superposed on the vertical blanking period of the video signal.
  • Data converted into the digital form in the A/D converter 123 is subjected to the waveform equalization process in a waveform equalizing section 124 and supplied to a data fetching/error correcting section 125.
  • the data fetching/error correcting section 125 fetches a text signal based on the timing signal from the sync separation section 122 and performs the error correction process.
  • a CPU 127 is operated based on a fixed program stored in a program ROM 128.
  • program ROM 128 In a character font ROM 129, character fonts for displaying characters are stored and character data can be read out by causing the CPU 127 to address a desired character in the character font ROM 129.
  • a display synchronizing signal which is synchronized with the operation of the television device is supplied to an input terminal 130.
  • the synchronizing signal is supplied to a display control section 131.
  • the display control section 131 effects the process for reading out data of a display memory 132 in synchronism with reproduction of a television image and writing display data into the display memory 132 in response to a write instruction from the CPU 127.
  • the color map memory 133 receives display data as an address input and outputs level data of primary color signals R, G, B corresponding to the address.
  • the level data is converted to analog R, G, B signals by a D/A converter 134 and they are derived from an output terminal as a display signal.
  • the display signal is synthesized with the television signal by synthesizing means (not shown) and displayed on the display. Further, the D/A converter 134 can be omitted and the R, G, B signals output from the color map memory 133 can be used as they are depending on the type of an interface on the display side.
  • An operation signal generated from the operating section of the remote controller operated by the viewer is input via an input terminal 136.
  • the operation signal is fetched by the CPU 127 via an operation input interface (I/F) 137 and then analyzed.
  • I/F operation input interface
  • a modem 138 contains a modulator and demodulator to construct a communication control section and is connected to a telephone line 140 via a line connecting section 139.
  • the line connecting section 139 controls connection/disconnection to or from the telephone line 140 and is controlled by the CPU 127.
  • the CPU 127 is connected to function blocks, that is, the data fetching/error correcting section 125, program ROM 128, character font ROM 129, operation input interface 137, work RAM 141, program RAM 142 and nonvolatile memory 143 via the bus line.
  • the program RAM 142 is a memory for storing a script (computer program) transmitted from the broadcasting station, the content of the script is interpreted according to an interpreter in the fixed program stored in the ROM 128 by the operation of the viewer and a preset process can be executed according to the procedure.
  • a script computer program
  • a fixed identification number (ID) of the reception terminal is stored in the nonvolatile memory 143 and when order data is transmitted to the data collecting station in the teleshopping, for example, the identification number is used.
  • the orderer is determined by recognizing the identification number.
  • the above circuit construction is used when the multiplexed text broadcasting program is processed. That is, if reception of the multiplexed text broadcasting program is specified by the operation of the remote controller, the CPU 127 is switched to be put under control of the multiplexed text broadcast processing program stored in the program ROM 128. Then, transmitted character data is converted to display data in the character font ROM 129 and stored into the display memory 132 via the display control section 131.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Claims (1)

  1. Appareil de télévision possédant une fonction de traitement de données de texte et étant adapté pour effectuer une opération de commutation depuis un mode d'affichage à double écran, dans lequel des signaux vidéo de premier et second tuners et des données de texte dudit second tuner sont affichés sur un écran (41), vers un mode d'affichage à simple écran, dans lequel le signal vidéo et les données de texte de l'un des tuners sont affichés sur l'écran (41), comportant :
    des moyens de réception (11, 12, 17, 18) possédant au moins lesdits premier et second tuners et pouvant recevoir et démoduler les signaux de diffusion de télévision des deux canaux ;
    des moyens de traitement de signal vidéo (13, 14, 19) pour afficher indépendamment un signal vidéo qui est un signal de réception dudit premier tuner dans ledit mode d'affichage à simple écran ou compresser au moins un des signaux vidéo qui sont des signaux de réception desdits premier et second tuners pour afficher simultanément les deux signaux vidéo sur un dispositif d'affichage dans ledit mode d'affichage à double écran ;
    des moyens de sélection (24) pour dériver sélectivement un des signaux de diffusion de télévision reçus par lesdits premier et second tuners ;
    des moyens de réception/démodulation de texte (20) pour recevoir une sortie desdits moyens de sélection et recevoir et démoduler des données de texte transmises superposées sur un canal de données contenu dans ledit signal de diffusion de télévision dérivé sélectivement et indépendant du signal vidéo/audio de celui-ci ;
    des moyens de synthétisation de texte (15, 23) pour synthétiser les données de texte démodulées par lesdits moyens de réception/démodulation de texte (20) avec une sortie desdits moyens de traitement de signal vidéo ;
    des moyens de séparation de synchronisation (31) pour séparer un signal de synchronisation de la sortie desdits moyens de sélection ; et
    des moyens de contrôle de commutation (22) pour effectuer l'opération de commutation desdits moyens de sélection (24) dans une période autre que la période de suppression de trame basée sur le signal de synchronisation provenant desdits moyens de séparation de synchronisation seulement après achèvement de l'état instable de sélection de canal dans le cas où le canal choisi dudit premier tuner est commuté vers le canal choisi par ledit second tuner,
       dans lequel
    lesdits moyens de contrôle de commutation (22) comprennent
    des moyens de contrôle de sélection de canal pour contrôler lesdits premier et second tuners afin de recevoir le même programme de canal pendant l'état instable de sélection de canal où un canal de réception dudit premier tuner est commuté vers le canal reçu par ledit second tuner, et
    des moyens pour fixer ledit second tuner à un autre canal ou fixer ledit second tuner dans un état ARRET après achèvement de l'opération de commutation (t2 + t3) desdits moyens de sélection (24).
EP97111327A 1996-07-05 1997-07-04 Appareil de télévision avec des fonctions de traitement de données de texte Expired - Lifetime EP0817483B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP176433/96 1996-07-05
JP17643396 1996-07-05
JP8176433A JPH1023377A (ja) 1996-07-05 1996-07-05 テレビジョン受信機を利用したテキストデータ処理装置

Publications (3)

Publication Number Publication Date
EP0817483A2 EP0817483A2 (fr) 1998-01-07
EP0817483A3 EP0817483A3 (fr) 1999-04-21
EP0817483B1 true EP0817483B1 (fr) 2005-09-14

Family

ID=16013626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111327A Expired - Lifetime EP0817483B1 (fr) 1996-07-05 1997-07-04 Appareil de télévision avec des fonctions de traitement de données de texte

Country Status (8)

Country Link
US (1) US6011594A (fr)
EP (1) EP0817483B1 (fr)
JP (1) JPH1023377A (fr)
KR (1) KR980013311A (fr)
CN (1) CN1173095A (fr)
DE (1) DE69734176T2 (fr)
HK (1) HK1007921A1 (fr)
TW (1) TW366664B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8457476B2 (en) 1998-07-30 2013-06-04 Tivo Inc. Multimedia signal processing system
US8526781B2 (en) 1998-07-30 2013-09-03 Tivo Inc. Multiple output digital video recording system
US8824865B2 (en) 1998-07-30 2014-09-02 Tivo Inc. Digital video recorder system with an integrated DVD recording device
US8934758B2 (en) 2010-02-09 2015-01-13 Echostar Global B.V. Methods and apparatus for presenting supplemental content in association with recorded content
US9300902B2 (en) 1998-05-06 2016-03-29 Tivo Inc. Playback of audio/video content with control codes
US9357260B2 (en) 2008-05-30 2016-05-31 Echostar Technologies L.L.C. Methods and apparatus for presenting substitute content in an audio/video stream using text data

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6341195B1 (en) * 1994-12-28 2002-01-22 E-Guide, Inc. Apparatus and methods for a television on-screen guide
JP3494555B2 (ja) * 1997-07-14 2004-02-09 株式会社日立製作所 表示装置及び表示方法
JPH11196249A (ja) * 1997-12-26 1999-07-21 Funai Electric Co Ltd 画像通信装置
DE59906518D1 (de) * 1998-04-22 2003-09-11 Micronas Munich Gmbh Empfangsgerät zum empfangen von video- und teletextsignalen
US6563515B1 (en) * 1998-05-19 2003-05-13 United Video Properties, Inc. Program guide system with video window browsing
US8380041B2 (en) 1998-07-30 2013-02-19 Tivo Inc. Transportable digital video recorder system
US6519283B1 (en) * 1999-01-25 2003-02-11 International Business Machines Corporation Integrated video processing system having multiple video sources and implementing picture-in-picture with on-screen display graphics
KR100313901B1 (ko) * 1999-02-08 2001-11-17 구자홍 텔레비젼 수신기에서의 부화면 처리 장치
US6587153B1 (en) * 1999-10-08 2003-07-01 Matsushita Electric Industrial Co., Ltd. Display apparatus
JP2001346121A (ja) * 2000-05-31 2001-12-14 Nec Corp ２画面機能付き表示装置
FR2819671B1 (fr) * 2001-01-17 2003-05-16 Thomson Licensing Sa Systeme de reception pour television multi-tuners permettant de connecter automatiquement chaque tuner a au moins une antenne, quel que soit le nombre d'antennes qu'il comporte
EP1274236A1 (fr) * 2001-07-05 2003-01-08 Thomson Licensing S.A. Appareil vidéo avec possibilité image-dans-image
JP4003000B2 (ja) * 2001-07-19 2007-11-07 日本ビクター株式会社 映像信号の記録再生方法、映像信号記録再生装置、及び映像信号記録再生用プログラム
US7080124B1 (en) * 2001-08-21 2006-07-18 Amazon Technologies, Inc. Digital media resource messaging
US6980257B2 (en) * 2002-11-18 2005-12-27 Sharp Laboratories Of America, Inc. Plural-source, selectable, combined image/text single-screen display
KR100873437B1 (ko) * 2002-11-28 2008-12-11 삼성전자주식회사 Ｐｉｐ화면을 이용한 듀얼모드 신호처리장치
JP2004193925A (ja) * 2002-12-11 2004-07-08 Orion Denki Kk 番組受信装置
US6848792B1 (en) * 2002-12-27 2005-02-01 Barco N.V. Full resolution multiple image projection system and method for projecting two images in full resolution adjacent each other
KR100976467B1 (ko) * 2003-05-13 2010-08-18 엘지전자 주식회사 텔레텍스트 정보 처리를 위한 디지털 ｔｖ 수신기
US7400360B2 (en) * 2003-09-22 2008-07-15 Lsi Corporation Device for simultaneous display of video at two resolutions with different fractions of active regions
US20050086702A1 (en) * 2003-10-17 2005-04-21 Cormack Christopher J. Translation of text encoded in video signals
WO2005125192A1 (fr) * 2004-06-14 2005-12-29 Thomson Licensing Systeme et procede permettant de changer les canaux de television dans une unite de traitement des signaux video
CN102665112B (zh) 2004-11-19 2015-08-19 Tivo股份有限公司 用于多媒体内容的安全传输和回放的方法和设备
US7432981B1 (en) * 2004-12-13 2008-10-07 Nvidia Corporation Apparatus, system, and method for processing digital audio/video signals
TWI307081B (en) * 2005-03-24 2009-03-01 Via Tech Inc Multi-view video switch control method and system
US7532253B1 (en) * 2005-07-26 2009-05-12 Pixelworks, Inc. Television channel change picture-in-picture circuit and method
TWI308308B (en) * 2005-08-12 2009-04-01 Au Optronics Corp Driving circuits and driving modules, display systems and electronic devices using the same
JP2008011085A (ja) * 2006-06-28 2008-01-17 Toshiba Corp デジタルｔｖキャプチャユニット、情報処理装置、および信号伝送方法
KR100803139B1 (ko) 2006-08-07 2008-02-14 엘지전자 주식회사 다이나믹 화면 전환 기능을 구비한 방송 수신기 및 그제어방법
JP5242111B2 (ja) * 2007-10-02 2013-07-24 株式会社ソニー・コンピュータエンタテインメント 送信装置、画像データ送信方法、受信装置および受信装置における画像表示方法
US8165450B2 (en) 2007-11-19 2012-04-24 Echostar Technologies L.L.C. Methods and apparatus for filtering content in a video stream using text data
US8165451B2 (en) 2007-11-20 2012-04-24 Echostar Technologies L.L.C. Methods and apparatus for displaying information regarding interstitials of a video stream
JP4731586B2 (ja) * 2008-05-29 2011-07-27 京セラ株式会社 番組表表示装置
JP2010048976A (ja) * 2008-08-20 2010-03-04 Sony Corp 信号処理装置および信号処理方法
US8698958B2 (en) 2010-06-16 2014-04-15 Silicon Image, Inc. Mechanism for memory reduction in picture-in-picture video generation
WO2017066736A1 (fr) * 2015-10-16 2017-04-20 Tribune Broadcasting Company, Llc Système de production multimédia avec fonctionnalité d'interface pour contenu de média social
US11172269B2 (en) 2020-03-04 2021-11-09 Dish Network L.L.C. Automated commercial content shifting in a video streaming system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660602A2 (fr) * 1993-12-24 1995-06-28 Kabushiki Kaisha Toshiba Dispositif d'affichage de caractères

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243610A1 (de) * 1982-11-25 1984-05-30 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung zur programmierbaren steuerung einer rundfunk- und/oder fernseh-empfangseinrichtung
DE3617251A1 (de) * 1986-05-22 1987-11-26 Philips Patentverwaltung Schaltungsanordnung fuer einen fernsehempfaenger mit einem videotextdekoder
US5121476A (en) * 1988-02-22 1992-06-09 Yee Keen Y TV data capture device
JPH02198284A (ja) * 1989-01-27 1990-08-06 Fujitsu General Ltd テレビ受信機
JPH05328319A (ja) * 1992-05-18 1993-12-10 Matsushita Electric Ind Co Ltd テレビジョン受像機
EP0656727B1 (fr) * 1993-11-03 1999-04-28 SONY-WEGA PRODUKTIONS GmbH Récepteur de télétexte
FR2717026B1 (fr) * 1994-03-01 1996-03-29 Thomson Consumer Electronics Procédé de programmation de tuner et dispositif de mise en Óoeuvre.
JP3029175B2 (ja) * 1994-03-14 2000-04-04 株式会社日立製作所 高電圧電力機器の組立方法及びこれに用いる作業装置
JPH08140064A (ja) * 1994-11-04 1996-05-31 Sony Corp 文字放送受信装置
JP3015293B2 (ja) * 1994-12-28 2000-03-06 エルジー電子株式会社 テレビジョン自動チャンネル探索方法
JP3393356B2 (ja) * 1995-05-26 2003-04-07 ソニー株式会社 受信装置および受信方法
KR0144890B1 (ko) * 1995-05-27 1998-07-15 김광호 더블 화면 티브이에서의 캡션과 문자 방송표시장치 및 방법
JPH0970025A (ja) * 1995-08-31 1997-03-11 Toshiba Corp テレビジョン受信機
KR0147662B1 (ko) * 1995-08-31 1998-09-15 김광호 더블데크 비디오테이프레코더와 cd-ok 시스템 일체형 더블/와이드 텔레비젼 수상기에 있어서 송신그래픽을 이용한 제어방법
KR100197838B1 (ko) * 1995-09-14 1999-06-15 윤종용 정보텔레비젼의 신호 선택회로
JPH0993505A (ja) * 1995-09-26 1997-04-04 Toshiba Corp 文字多重デコーダを有するテレビ受信機
JPH0993548A (ja) * 1995-09-27 1997-04-04 Toshiba Corp 文字情報表示機能付きテレビ受信機
US5801785A (en) * 1996-02-13 1998-09-01 International Business Machines Corporation Method and system for processing two analog composite video signals
US5900916A (en) * 1996-12-30 1999-05-04 Mitsubishi Consumer Electronics America, Inc. Apparatus for control of images from multiple sources

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660602A2 (fr) * 1993-12-24 1995-06-28 Kabushiki Kaisha Toshiba Dispositif d'affichage de caractères

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9300902B2 (en) 1998-05-06 2016-03-29 Tivo Inc. Playback of audio/video content with control codes
US9344668B2 (en) 1998-05-06 2016-05-17 Tivo Inc. System and method for time-shifted program viewing
US9350934B2 (en) 1998-05-06 2016-05-24 Tivo Inc. System and method for time-shifted program viewing
US9467749B2 (en) 1998-05-06 2016-10-11 Tivo Inc. Playback of audio/video content with control codes
US8457476B2 (en) 1998-07-30 2013-06-04 Tivo Inc. Multimedia signal processing system
US8526781B2 (en) 1998-07-30 2013-09-03 Tivo Inc. Multiple output digital video recording system
US8824865B2 (en) 1998-07-30 2014-09-02 Tivo Inc. Digital video recorder system with an integrated DVD recording device
US8965173B2 (en) 1998-07-30 2015-02-24 Tivo Inc. Multimedia stream processing system
US9002173B2 (en) 1998-07-30 2015-04-07 Tivo Inc. Digital security surveillance system
US9357260B2 (en) 2008-05-30 2016-05-31 Echostar Technologies L.L.C. Methods and apparatus for presenting substitute content in an audio/video stream using text data
US8934758B2 (en) 2010-02-09 2015-01-13 Echostar Global B.V. Methods and apparatus for presenting supplemental content in association with recorded content

Also Published As

Publication number Publication date
CN1173095A (zh) 1998-02-11
EP0817483A2 (fr) 1998-01-07
TW366664B (en) 1999-08-11
US6011594A (en) 2000-01-04
DE69734176D1 (de) 2005-10-20
JPH1023377A (ja) 1998-01-23
HK1007921A1 (en) 1999-04-30
KR980013311A (ko) 1998-04-30
DE69734176T2 (de) 2006-06-29
EP0817483A3 (fr) 1999-04-21

Similar Documents

Publication Publication Date Title
EP0817483B1 (fr) Appareil de télévision avec des fonctions de traitement de données de texte
US5708475A (en) Receiving apparatus and receiving method
US5512954A (en) Television receiver with decoder for decoding coded data from a video signal
EP1265439B1 (fr) Système de traitement de signal vidéo doté d'une capacité de traitement d'information auxiliaire
KR100320267B1 (ko) 텔레비젼수상기
JP2950503B2 (ja) Ｐｃモニタ兼用のマルチシステムテレビジョン受像機
KR100548056B1 (ko) 다중-영상 디스플레이에서 독립 영상 변경을 제공하는 비디오 신호 처리 장치
US6459456B1 (en) Digital receiver apparatus capable of receiving multiple channels and having display function control method
KR19990008711A (ko) 방송방식이 서로다른 복수화면의 동시시청 가능한 tv수신 장치
JPH04107079A (ja) 受信装置
US6727960B2 (en) Television channel selection method and apparatus
JPH11164215A (ja) テレビジョン受像機
US5986716A (en) Television receiver and signal processing apparatus
JPH07274140A (ja) テレビジョン受像機
JP2003116073A (ja) テレビジョン放送受信装置
JP2950505B2 (ja) 高鮮明テレビジョン（ｈｄ−ｔｖ）受像機のモニター出力装置
JP2000270277A (ja) テレビジョン受像機
KR100402300B1 (ko) 텔레비젼 세트 및 텔레비젼 세트의 채널 변경 방법
JPH05316447A (ja) テレビジョン受像機
JPH11355688A (ja) 多画面表示装置
JP2001186436A (ja) 電子番組表示装置
JPH06133240A (ja) Ｏｓｄ表示装置
JP2001036835A (ja) 多チャンネル用テレビジョン受像機
JP2725376B2 (ja) テレビジョン受像機
JP3013217B2 (ja) 子画面リニアリティ制御装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970801

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TAKASHIMA, TADAO

AKX Designation fees paid

Free format text: DE GB IT

17Q First examination report despatched

Effective date: 20031103

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69734176

Country of ref document: DE

Date of ref document: 20051020

Kind code of ref document: P

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1007921

Country of ref document: HK

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060628

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060629

Year of fee payment: 10

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060731

Year of fee payment: 10

26N No opposition filed

Effective date: 20060615

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070704